<p>Diamond drill bit: made of carbon steel with diamond coating for porcelain, glass, marble, ceramics, rock and granite, etc.</p> <p>High quality hole drilling: blade thick with a brazed design for long life, ideal for drilling clean, precise holes and cutting perfect circles</p> <p>Long life: heavy-duty hole saws provide superior performance, durability is more 8 times than other common diamond hole saws</p> <p>Attention: Start drilling at a 45 degree angle, and drill vertically when the crescent-shaped edge is cut to prevent the hole saw from slipping. Never let your drill bit dry out and use water to keep it moist and cool.</p> <p>How we're different: We aim to make the best products to inspire our customers to live a healthier lifestyle. convenient and safe. We have a professional product monitoring team who focus on every detail that matters to you</p> <p>Product Description</p> <p>Features:</p> <p>Material: Carbon Steel carbon.</p> <p>Shank diameter: 10mm.</p> <p>Diamond coating: 1.5mm.</p> <p>Features:</p> <p>This drill bit diamond removes a full circle from glass, tile, marble, granite, ceramic or other materials.</p> <p>Caution:</p> <p>Always use water for cleaning. lubrication, otherwise the diamond drill bit will burn out.</p> <p>Can be used with a standard electric drill.</p> <p>Make a half round mark at a 45° angle and then hold the drill straight. </p> <p>Reduced drill speed, low drill pressure and increased use of water to keep hole saws cool will significantly extend drill bit life.</p> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store